Home / 3,415.30-5,122.68-1,223.80

Finding the Fourth Proportional to 3,415.30, 5,122.68 and 1,223.80

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Solution

The fourth proportional to 3,415.30, 5,122.68 and 1,223.80 is: 1,835.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.30 : 5,122.68 = 1,223.80 : x
  2. Step 2: Convert to fraction form
    3,415.30/5,122.68 = 1,223.80/x
  3. Step 3: Cross multiply
    3,415.30x = 5,122.68 × 1,223.80
  4. Step 4: Simplify right side
    3,415.30x = 6,269,135.78
  5. Step 5: Solve for x
    x = 6,269,135.78/3,415.30
  6. Step 6: Final answer
    x = 1,835.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.